Wilber e



W.4E. KILBORN.

EELED E R Aprovements, with the box UNITED STATES PATENT OEEICE.

` VILBER E. kKILBORN, OF SIDNEY, OHIO, ASSIGNOROF ONE-HALF TO f VILLIAMII. O. GOODE, OF SAME PLACE.

WH EELED EARTH-SCRAPER. I'

y SPECIFICATION fommg part of Letters Patent' No. 422,531, da@ March 4,Iseo.

Application filed November Z9, 1889. Serial No. 331,938. (No model.)

To a/ZZ whom t may concern.:

Be it known that I, WILBEE E. K1I.Bom\r,y a citizen of the United Statesof America, re-

siding at Sidney, in the county of Shelby and State of Ohio,haveinvented certain new and useful vImprovements in Vheeled Earth-Y Thenovel features of my invention are,-

rst, pivoting the lever-bars to the standards in rear of a' verticalline drawn from the points of attachment of the standards to the scraperbox or bowl, thereby bringing these pivotal points nearer to the axlethan heretofore, and thus securing increased leverpower in turning 'theaxle to raise the box or bowl when filled with earth; second, theprovision of means for preventing the backward tilting of thescraper boxor bowl, and also for steadying it while conveying its load to the dump,and, third, curving theforward .ends of the lever-bars, so that whilethe hook-links'may'be pivoted to them at sufficient distance'from thepivots of vsaid bars to prevent Contact with the standards the ends ofthe bars will not strike on the upper edges of the scraper box or bowlwhen the lever isthrown upward to lower said box or bowl.

Figure A1 of the drawings is a perspective view of a wheeled scraperembodying my imor bowl elevated as when lled, one of the wheels beingremoved for clear illustration. Fig. 2 is a side elevation of the sainewith the box or bowl down in position to iill. Fig. 3 is also a sideelevation of the same with the box or bowl in position to dump.

In the accompanying drawings, A repre-E sents the scraper box or bowl.provided with side handles a.

B is the axle, having right-angularly-bent ends to form spindles b forthe wheels O.

D is the lever, to whose forward end are rigidly secured the leveribarsD', which are also rigidly secured to the sides of the axle, as'shown.

E are the standards, to which'the scraper box or bowl is hung, eachconsisting, preferably, of two pieces of bariron, one piece be-A ingplaced on the inside and the other piece on the outside of the box orbowl, and firmly bolted thereto at their lower ends, as shown, theirupper ends extending far enough above the box or bowl to receive theleverbarsbetween them, which are pivoted to the standards at e. ards besecured to the box or bowl forward of its middle portion, (and farenough forward to avoid interfering with the, free turning of thecranked portions of the axle,) so that the heavier portion will be in.rear of the standlards; otherwise the loaded box or bowl would tipforward and dump, especially when only partly full and the greater partof the load in the forward portion; and heretofore the points of thepivotal attachment of the leverA vbars to the standards have beenlocated in a direct vertical line with the points of attachment of thestandards to the scraper box or bowl, and consequently at a considerabledistance from the points of `attachA ment of those bars to the axle. Nowthe nearer the points of pivotal attachment of the It is essential thatthese standlever-bars to the standards are brought to the axle theeasier the lattercan be turned and a given load be raised by the lever.Therefore, instead of pivoting the lever-bars to the standards directlyabove the points of attachment of the standards to the box or bowl, asheretofore, I pivot them to the standards in rear of a vertical linedrawn from said points, which I accomplish by either curving thestandards E, as shown in Figs. 1 and 3, or by securing the standards tothe box or bowl in a rearwardly-inclined position, as seen .in 2A F arethe draft-bars, whose forward ends are rigidly secured to the tongue G,while their rear ends are each pivoted on a bolt f, passed through theside of the scraper box or bowl and through the standard E, and F areholdback-straps, eachbolted at one end to the box or bowl, its other endbeing passed over a bolt f, outside of the draftbar, and secured thereonby a nut, these straps serving to counteract the leverage on the bolts.

H are the tonguebraces bolted to the tongue and riveted to the innersides of the draftbars, as shown.

In order to prevent the loaded scraper box or bowl from tilting backwardwhile being raised from the position shown in Fig. 2 to" that shown inFig. l, I cut out a rectangular piece from the top of each et' its sidesat the front end, as seen in Figs. 1 and 2, to form shoulders I, andprovide the tongue-braces Il with inwardlyprojecting lugs J, for engagement with said shoulders, as clearly shown; or instead of cutting outthese pieces to form the shoulders I may form them by attaching projeetin g pieces to the upper front portion of the sides ofthe scraper boxor bowl, as seen in Fig. 3. It will be evident that as the tongue-braeesare rigidly secured to the draft bars the lugs may be formed on orsecured to the latter without departing from my invention, as it is onlyessential that they be carried by the draft-bars. By placing theseshoulders and lugs t-he greatest practicable distance from the pivots ofthe draft-bars any little variation in the construction of the shouldersor of the draft-bars will not materially aitect the hanging of thescraper box or bowl, whereas if the shoulders were placed near thosepivots any slight variation of the abovenientioned parts would preventthe scraper from working satisfactorily, it being understood that inmaking scrapers in duplicate parts there is always a slight diierence inthe irons or in the distance of the holes, tbc., and when niceadjustment is required, as is the case when the shoulders are near thepivotal points of the draft-bars, there is sure to be trouble from thissource when the parts to be put together are selected at random.Furthermore, these shoulders afford no lodgment for dirt to obstruct thefree working of the parts, as is the case when supports for thedratt-bars are secured to the sides of the box or bowl near said pivotalpoints.

The scraper box or bowl is prevented from dumping' while loading by thefollowing mechanism: To cach side of the box or bowl, at the forwardend, is secured a hook-catch K, with which hooks L, pivoted at Z inloops M on the draft-bars, are made to engage when the box or bowl islowered. These hooks are operated by means of hook-links N, pivoted attheir lower ends to the hooks and at their upper ends to the lever-bars.I'Ieretofore this latter connection has been made in the same plane asthe points of attachmentoi' the leverbars to the axle and to thestandards, from which it resulted that in order 'to prevent t-hehook-links from coming into contact with the standards the lever-barshad to extend so farbeyond the latter th at they would strike 'of thedraft-bars and provided near its upper end with a spring-hook 0 forengagement with one of the handles a when the scraper box or bowl isdumped, as seen in Fig.

P is the lever-hook pivoted between the rear ends of the lever-bars anddesigned to engage with a cleat Q, secured to the back of the box orbowl.

The drawings reveal the operation of the machine, and thereforedescription is unnecessary.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination, with the scraper box or bowl and the cranked axle,of the standards secured to the sides of the box or bowl, and thelever-bars secured directly to the axle and pivoted to the standards inrear of a vertical line drawn from the point of attachment of saidstandards to the box or bowl, substantially as described, and for thepurpose set forth.

2. The combination, with the scraper box or bowl and' the cranked axle,of the rearwardly-curved standards secured to the sides of the boxorbowl, and the lever-bars secured IOO IIO

to the axle and pivoted in the upper curved ends of said standards,substantially as described, and for the purpose set fort-h.

3. The combination, with the scraper box or bowl having shoulders at itsforward end, and thetongue, of the draft-bars secured to and extendingin rear of the tongue and pivoted to the sides of the box or bowl on anapproximate level with the tongue, the said draft-bars carrying lugsarranged to rest on said shoulders when the box or bowl 'is in itselevated position, for the purposes set forth.

4. The combination, with the scraper box or bowl having shoulders cutinits sides at the forward end, of the draft-bars and the tonguelbraces,the latter being secured to said bars and having inwardly-projectinglugsfor engagement with said shoulders when the box or bowl is in itselevated position, substantially as described.

5. The combination, with the scraper box or bowl, the standards securedthereto, the

cranked axle, and the pvoted hook, of the lever-bars secured t0 the axlepvoted in the standards and having an Vupward curve at their forwarden'ds,'and the hook-links pivoted at theirlwer ends to the hoks and attheir upper ends to the forward ends of the lever-bars, for the purposesset forth.

VILBER E. KILBORN.

' Witnesses:

GEO. B. TOLAND, N. YOAKAM.

